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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2025-9648

Denial of Service in CivetWeb

Description

A vulnerability in the CivetWeb library's function mg_handle_form_request allows remote attackers to trigger a denial of service (DoS) condition. By sending a specially crafted HTTP POST request containing a null byte in the payload, the server enters an infinite loop during form data parsing. Multiple malicious requests will result in complete CPU exhaustion and render the service unresponsive to further requests. This issue was fixed in commit 782e189. This issue affects only the library, standalone executable pre-built by vendor is not affected.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

CivetWeb CivetWeb

Default version status: unaffected

  • 0 to < 1.08unaffected
  • 1.08 to < 1.10unknown
  • 1.10 to ≤ 1.16affected

References